Some people claim that, a long time ago, there was a mod for the original Homeworld game that tweaked all the ships's directional movement stats to implement "full" newtonian physics.
Meaning that all ships had to do a 180 degrees flip-and-burn of equal duration to the "acceleration" phase in order to come to a full stop when reaching their move order location. Like real space warships would.
Since the original Honeworld simulated shots as physical projectiles, it was possible to push enemies out of range by shooting them. And shooting also pushed you in the opposite direction if the ship didn't thrust to compensate.
Unfortunately, this mod can't be found anywhere now.
The Point Defense mod for HW2 apparently has the closest thing to it so far, but it's not as detailed.